Patch "kselftest/arm64: Actually test SME vector length changes via sigreturn" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    kselftest/arm64: Actually test SME vector length changes via sigreturn

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kselftest-arm64-actually-test-sme-vector-length-chan.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 6ba893505d3961d955ecde747b72f9249e02caaf
Author: Mark Brown <broonie@xxxxxxxxxx>
Date:   Thu Aug 29 18:20:09 2024 +0100

    kselftest/arm64: Actually test SME vector length changes via sigreturn
    
    [ Upstream commit 6f0315330af7a57c1c00587fdfb69c7778bf1c50 ]
    
    The test case for SME vector length changes via sigreturn use a bit too
    much cut'n'paste and only actually changed the SVE vector length in the
    test itself. Andre's recent factoring out of the initialisation code caused
    this to be exposed and the test to start failing. Fix the test to actually
    cover the thing it's supposed to test.
    
    Fixes: 4963aeb35a9e ("kselftest/arm64: signal: Add SME signal handling tests")
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
    Tested-by: Andre Przywara <andre.przywara@xxxxxxx>
    Link: https://lore.kernel.org/r/20240829-arm64-sme-signal-vl-change-test-v1-1-42d7534cb818@xxxxxxxxxx
    Signed-off-by: Will Deacon <will@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sme_change_vl.c b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sme_change_vl.c
index cb8c051b5c8f2..dfd6a2badf9fb 100644
--- a/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sme_change_vl.c
+++ b/tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sme_change_vl.c
@@ -35,30 +35,30 @@ static int fake_sigreturn_ssve_change_vl(struct tdescr *td,
 {
 	size_t resv_sz, offset;
 	struct _aarch64_ctx *head = GET_SF_RESV_HEAD(sf);
-	struct sve_context *sve;
+	struct za_context *za;
 
 	/* Get a signal context with a SME ZA frame in it */
 	if (!get_current_context(td, &sf.uc, sizeof(sf.uc)))
 		return 1;
 
 	resv_sz = GET_SF_RESV_SIZE(sf);
-	head = get_header(head, SVE_MAGIC, resv_sz, &offset);
+	head = get_header(head, ZA_MAGIC, resv_sz, &offset);
 	if (!head) {
-		fprintf(stderr, "No SVE context\n");
+		fprintf(stderr, "No ZA context\n");
 		return 1;
 	}
 
-	if (head->size != sizeof(struct sve_context)) {
+	if (head->size != sizeof(struct za_context)) {
 		fprintf(stderr, "Register data present, aborting\n");
 		return 1;
 	}
 
-	sve = (struct sve_context *)head;
+	za = (struct za_context *)head;
 
 	/* No changes are supported; init left us at minimum VL so go to max */
 	fprintf(stderr, "Attempting to change VL from %d to %d\n",
-		sve->vl, vls[0]);
-	sve->vl = vls[0];
+		za->vl, vls[0]);
+	za->vl = vls[0];
 
 	fake_sigreturn(&sf, sizeof(sf), 0);